| 摘要 |
<p>A process of manufacturing cellulose paper pulp from bagasse, jute, straw and like raw materials of relatively low lignin content comprises passing the raw material upwardly along a digester (1) down which hot alkaline liquor passes in a counter flow, feeding the treated material to a screw press (10), mixing it with aqueous magnesium salt and fluffing it in a shredder (11) and then passing the material down through a vertical oxygen reactor where it is treated with hot oxygen whereafter it is mixed with hot water to obtain a suspension, gases are removed from the suspension and the latter is pressed to dryness of 20 to 35%. <IMAGE></p> |
